It is a 3-stage process, starting from a Google Hangout video interview, followed by an onsite interview day of 3 interviews with different focuses on technical skills, technical case study and business case study. If the onsite goes well, you'll be scheduled a call with the director for the final call.

Had a phone interview. The interviewer asked me about my background / a case question. Had an onsite in San Bruno with three in-person interviews. One interviewer was 15 minutes late (for a 45 minute interview) and a) rushed through the case questions, b) was generally difficult to understand. Other two interviewers were awesome and asked good questions.